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-rw-r--r--carl9170fw/tools/carlu/src/usb.c793
1 files changed, 793 insertions, 0 deletions
diff --git a/carl9170fw/tools/carlu/src/usb.c b/carl9170fw/tools/carlu/src/usb.c
new file mode 100644
index 0000000..ebc19a9
--- /dev/null
+++ b/carl9170fw/tools/carlu/src/usb.c
@@ -0,0 +1,793 @@
+/*
+ * carlu - userspace testing utility for ar9170 devices
+ *
+ * USB back-end driver
+ *
+ * Copyright 2009-2011 Christian Lamparter <chunkeey@googlemail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <stdlib.h>
+#include "libusb.h"
+
+#include "carlu.h"
+#include "usb.h"
+#include "debug.h"
+#include "list.h"
+#include "cmd.h"
+
+#define ADD_DEV(_vid, _pid, _vs, _ps) { \
+ .idVendor = _vid, \
+ .idProduct = _pid, \
+ .vendor_name = _vs, \
+ .product_name = _ps \
+}
+
+static const struct {
+ uint16_t idVendor;
+ uint16_t idProduct;
+ char *vendor_name;
+ char *product_name;
+} dev_list[] = {
+ ADD_DEV(0x0cf3, 0x9170, "Atheros", "9170"),
+ ADD_DEV(0x0cf3, 0x1001, "Atheros", "TG121N"),
+ ADD_DEV(0x0cf3, 0x1002, "TP-Link", "TL-WN821N v2"),
+ ADD_DEV(0xcace, 0x0300, "Cace", "Airpcap NX"),
+ ADD_DEV(0x07d1, 0x3c10, "D-Link", "DWA 160 A1"),
+ ADD_DEV(0x07d1, 0x3a09, "D-Link", "DWA 160 A2"),
+ ADD_DEV(0x0846, 0x9010, "Netgear", "WNDA3100"),
+ ADD_DEV(0x0846, 0x9001, "Netgear", "WN111 v2"),
+ ADD_DEV(0x0ace, 0x1221, "Zydas", "ZD1221"),
+ ADD_DEV(0x0586, 0x3417, "ZyXEL", "NWD271N"),
+ ADD_DEV(0x0cde, 0x0023, "Z-Com", "UB81 BG"),
+ ADD_DEV(0x0cde, 0x0026, "Z-Com", "UB82 ABG"),
+ ADD_DEV(0x0cde, 0x0027, "Sphairon", "Homelink 1202"),
+ ADD_DEV(0x083a, 0xf522, "Arcadyan", "WN7512"),
+ ADD_DEV(0x2019, 0x5304, "Planex", "GWUS300"),
+ ADD_DEV(0x04bb, 0x093f, "IO-Data", "WNGDNUS2"),
+ ADD_DEV(0x057C, 0x8401, "AVM", "FRITZ!WLAN USB Stick N"),
+ ADD_DEV(0x057C, 0x8402, "AVM", "FRITZ!WLAN USB Stick N 2.4"),
+};
+
+static libusb_context *usb_ctx;
+static LIST_HEAD(active_dev_list);
+
+static int carlusb_event_thread(void *_ar)
+{
+ struct carlu *ar = (void *)_ar;
+ dbg("event thread active and polling.\n");
+
+ while (!ar->stop_event_polling)
+ libusb_handle_events(ar->ctx);
+
+ dbg("==> event thread desixed.\n");
+ return 0;
+}
+
+static int carlusb_is_ar9170(struct libusb_device_descriptor *desc)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(dev_list); i++) {
+ if ((desc->idVendor == dev_list[i].idVendor) &&
+ (desc->idProduct == dev_list[i].idProduct)) {
+ dbg("== found device \"%s %s\" [0x%04x:0x%04x]\n",
+ dev_list[i].vendor_name, dev_list[i].product_name,
+ desc->idVendor, desc->idProduct);
+
+ return i;
+ }
+ }
+
+ return -1;
+}
+
+static bool carlusb_is_dev(struct carlu *iter,
+ struct libusb_device *dev)
+{
+ libusb_device *list_dev;
+
+ if (!iter->dev)
+ return false;
+
+ list_dev = libusb_get_device(iter->dev);
+
+ if (libusb_get_bus_number(list_dev) == libusb_get_bus_number(dev) &&
+ libusb_get_device_address(list_dev) == libusb_get_device_address(dev))
+ return true;
+
+ return false;
+}
+
+int carlusb_show_devinfo(struct carlu *ar)
+{
+ struct libusb_device_descriptor desc;
+ libusb_device *dev;
+ int err;
+
+ dev = libusb_get_device(ar->dev);
+
+ err = libusb_get_device_descriptor(dev, &desc);
+ if (err)
+ return err;
+
+ info("USB Device Information:\n");
+ info("\tUSB VendorID:%.4x(%s), ProductID:%.4x(%s)\n",
+ dev_list[ar->idx].idVendor, dev_list[ar->idx].vendor_name,
+ dev_list[ar->idx].idProduct, dev_list[ar->idx].product_name);
+ info("\tBus:%d Address:%d\n", libusb_get_bus_number(dev),
+ libusb_get_device_address(dev));
+
+ return 0;
+}
+
+static int carlusb_get_dev(struct carlu *ar, bool reset)
+{
+ struct carlu *iter;
+ libusb_device_handle *dev;
+ libusb_device **list;
+ int ret, err, i, idx = -1;
+
+ ret = libusb_get_device_list(usb_ctx, &list);
+ if (ret < 0) {
+ err("usb device enum failed (%d)\n", ret);
+ return ret;
+ }
+
+ for (i = 0; i < ret; i++) {
+ struct libusb_device_descriptor desc;
+
+ memset(&desc, 0, sizeof(desc));
+ err = libusb_get_device_descriptor(list[i], &desc);
+ if (err != 0)
+ continue;
+
+ idx = carlusb_is_ar9170(&desc);
+ if (idx < 0)
+ continue;
+
+ list_for_each_entry(iter, &active_dev_list, dev_list) {
+ if (carlusb_is_dev(iter, list[i])) {
+ err = -EALREADY;
+ break;
+ }
+ }
+
+ if (err)
+ continue;
+
+ err = libusb_open(list[i], &dev);
+ if (err != 0) {
+ err("failed to open device (%d)\n", err);
+ continue;
+ }
+
+ err = libusb_kernel_driver_active(dev, 0);
+ switch (err) {
+ case 0:
+ break;
+ default:
+ err("failed to aquire exculusive access (%d).\n", err);
+ goto skip;
+ }
+
+ if (reset) {
+ err = libusb_reset_device(dev);
+ if (err != 0) {
+ err("failed to reset device (%d)\n", err);
+ goto skip;
+ }
+ }
+
+ err = libusb_claim_interface(dev, 0);
+ if (err == 0) {
+ dbg(">device is now under our control.\n");
+ break;
+ } else {
+ err("failed to claim device (%d)\n", err);
+ goto skip;
+ }
+
+skip:
+ libusb_close(dev);
+ }
+
+ if (i != ret) {
+ ar->idx = idx;
+ ar->ctx = usb_ctx;
+ ar->dev = dev;
+ list_add_tail(&ar->dev_list, &active_dev_list);
+ ret = 0;
+ } else {
+ ret = -ENODEV;
+ }
+
+ libusb_free_device_list(list, 1);
+ return ret;
+}
+
+static void carlusb_tx_cb(struct carlu *ar,
+ struct frame *frame)
+{
+ if (ar->tx_cb)
+ ar->tx_cb(ar, frame);
+
+ ar->tx_octets += frame->len;
+
+ carlu_free_frame(ar, frame);
+}
+
+static void carlusb_zap_queues(struct carlu *ar)
+{
+ struct frame *frame;
+
+ BUG_ON(SDL_mutexP(ar->tx_queue_lock) != 0);
+ while (!list_empty(&ar->tx_queue)) {
+ frame = list_first_entry(&ar->tx_queue, struct frame, dcb.list);
+ list_del(&frame->dcb.list);
+ carlusb_tx_cb(ar, frame);
+ }
+ SDL_mutexV(ar->tx_queue_lock);
+}
+
+static void carlusb_free_driver(struct carlu *ar)
+{
+ if (!IS_ERR_OR_NULL(ar)) {
+ if (ar->event_pipe[0] > -1)
+ close(ar->event_pipe[0]);
+
+ if (ar->event_pipe[1] > -1)
+ close(ar->event_pipe[1]);
+
+ carlusb_zap_queues(ar);
+ carlfw_release(ar->fw);
+ ar->fw = NULL;
+
+ if (ar->dev) {
+ libusb_release_interface(ar->dev, 0);
+ libusb_close(ar->dev);
+ ar->dev = NULL;
+ }
+ carlu_free_driver(ar);
+ }
+}
+
+static int carlusb_init(struct carlu *ar)
+{
+ init_list_head(&ar->tx_queue);
+ ar->tx_queue_lock = SDL_CreateMutex();
+ ar->event_pipe[0] = ar->event_pipe[1] = -1;
+
+ return 0;
+}
+
+static struct carlu *carlusb_open(void)
+{
+ struct carlu *tmp;
+ int err;
+
+ tmp = carlu_alloc_driver(sizeof(*tmp));
+ if (tmp == NULL)
+ return NULL;
+
+ err = carlusb_init(tmp);
+ if (err < 0)
+ goto err_out;
+
+ err = carlusb_get_dev(tmp, true);
+ if (err < 0)
+ goto err_out;
+
+ return tmp;
+
+err_out:
+ carlusb_free_driver(tmp);
+ return ERR_PTR(err);
+}
+
+static void carlusb_cancel_rings(struct carlu *ar)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(ar->rx_ring); i++)
+ libusb_cancel_transfer(ar->rx_ring[i]);
+
+ libusb_cancel_transfer(ar->rx_interrupt);
+}
+
+static void carlusb_free_rings(struct carlu *ar)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(ar->rx_ring); i++)
+ libusb_free_transfer(ar->rx_ring[i]);
+
+ libusb_free_transfer(ar->rx_interrupt);
+}
+
+static void carlusb_destroy(struct carlu *ar)
+{
+ int event_thread_status;
+
+ dbg("==>release device.\n");
+
+ ar->stop_event_polling = true;
+
+ carlusb_cancel_rings(ar);
+
+ SDL_WaitThread(ar->event_thread, &event_thread_status);
+
+ carlusb_free_rings(ar);
+ list_del(&ar->dev_list);
+}
+
+static void carlusb_tx_bulk_cb(struct libusb_transfer *transfer);
+
+static void carlusb_tx_pending(struct carlu *ar)
+{
+ struct frame *frame;
+ struct libusb_transfer *urb;
+ int err;
+
+ BUG_ON(SDL_mutexP(ar->tx_queue_lock) != 0);
+ if (ar->tx_queue_len >= (AR9170_TX_MAX_ACTIVE_URBS) ||
+ list_empty(&ar->tx_queue))
+ goto out;
+
+ ar->tx_queue_len++;
+
+ urb = libusb_alloc_transfer(0);
+ if (urb == NULL)
+ goto out;
+
+ frame = list_first_entry(&ar->tx_queue, struct frame, dcb.list);
+ list_del(&frame->dcb.list);
+
+ if (ar->tx_stream) {
+ struct ar9170_stream *tx_stream;
+
+ tx_stream = frame_push(frame, sizeof(*tx_stream));
+ tx_stream->length = cpu_to_le16(frame->len);
+ tx_stream->tag = cpu_to_le16(0x697e);
+ }
+
+ libusb_fill_bulk_transfer(urb, ar->dev, AR9170_EP_TX, (unsigned char *)
+ frame->data, frame->len, carlusb_tx_bulk_cb, (void *)frame, 0);
+
+ /* FIXME: ZERO_PACKET support! */
+ urb->flags |= LIBUSB_TRANSFER_FREE_TRANSFER;
+/* urb->flags |= LIBUSB_TRANSFER_ZERO_PACKET; */
+ frame->dev = (void *) ar;
+ frame_get(frame);
+
+ err = libusb_submit_transfer(urb);
+ if (err != 0) {
+ err("->usb bulk tx submit failed (%d).\n", err);
+ libusb_free_transfer(urb);
+ }
+
+out:
+ SDL_mutexV(ar->tx_queue_lock);
+ return;
+}
+
+void carlusb_tx(struct carlu *ar, struct frame *frame)
+{
+ BUG_ON(SDL_mutexP(ar->tx_queue_lock) != 0);
+
+ list_add_tail(&frame->dcb.list, &ar->tx_queue);
+ SDL_mutexV(ar->tx_queue_lock);
+
+ carlusb_tx_pending(ar);
+}
+
+static void carlusb_tx_bulk_cb(struct libusb_transfer *transfer)
+{
+ struct frame *frame = (void *) transfer->user_data;
+ struct carlu *ar = (void *) frame->dev;
+
+ BUG_ON(SDL_mutexP(ar->tx_queue_lock) != 0);
+ ar->tx_queue_len--;
+ SDL_mutexV(ar->tx_queue_lock);
+
+ if (ar->tx_stream)
+ frame_pull(frame, 4);
+
+ carlusb_tx_cb(ar, frame);
+ carlusb_tx_pending(ar);
+}
+
+static void carlusb_rx_interrupt_cb(struct libusb_transfer *transfer)
+{
+ struct carlu *ar = (void *) transfer->user_data;
+ int err;
+
+ switch (transfer->status) {
+ case LIBUSB_TRANSFER_COMPLETED:
+ carlu_handle_command(ar, transfer->buffer, transfer->actual_length);
+ break;
+
+ case LIBUSB_TRANSFER_CANCELLED:
+ return;
+
+ default:
+ err("==>rx_irq urb died (%d)\n", transfer->status);
+ break;
+ }
+
+ err = libusb_submit_transfer(transfer);
+ if (err != 0)
+ err("==>rx_irq urb resubmit failed (%d)\n", err);
+}
+
+static void carlusb_rx_bulk_cb(struct libusb_transfer *transfer)
+{
+ struct frame *frame = (void *) transfer->user_data;
+ struct carlu *ar = (void *) frame->dev;
+ int err;
+
+ switch (transfer->status) {
+ case LIBUSB_TRANSFER_COMPLETED:
+ frame_put(frame, transfer->actual_length);
+
+ carlu_rx(ar, frame);
+
+ frame_trim(frame, 0);
+ break;
+
+ case LIBUSB_TRANSFER_CANCELLED:
+ return;
+
+ default:
+ err("==>rx_bulk urb died (%d)\n", transfer->status);
+ break;
+ }
+
+ err = libusb_submit_transfer(transfer);
+ if (err != 0)
+ err("->rx_bulk urb resubmit failed (%d)\n", err);
+}
+
+static int carlusb_initialize_rxirq(struct carlu *ar)
+{
+ int err;
+
+ ar->rx_interrupt = libusb_alloc_transfer(0);
+ if (ar->rx_interrupt == NULL) {
+ err("==>cannot alloc rx interrupt urb\n");
+ return -1;
+ }
+
+ libusb_fill_interrupt_transfer(ar->rx_interrupt, ar->dev, AR9170_EP_IRQ,
+ (unsigned char *)&ar->irq_buf, sizeof(ar->irq_buf),
+ carlusb_rx_interrupt_cb, (void *) ar, 0);
+
+ err = libusb_submit_transfer(ar->rx_interrupt);
+ if (err != 0) {
+ err("==>failed to submit rx interrupt (%d)\n", err);
+ return err;
+ }
+
+ dbg("rx interrupt is now operational.\n");
+ return 0;
+}
+
+static int carlusb_initialize_rxrings(struct carlu *ar)
+{
+ struct frame *tmp;
+ unsigned int i;
+ int err;
+
+ for (i = 0; i < ARRAY_SIZE(ar->rx_ring); i++) {
+ tmp = frame_alloc(ar->rx_max);
+ if (tmp == NULL)
+ return -ENOMEM;
+
+ tmp->dev = (void *) ar;
+
+ ar->rx_ring[i] = libusb_alloc_transfer(0);
+ if (ar->rx_ring[i] == NULL) {
+ frame_free(tmp);
+ return -ENOMEM;
+ }
+
+ libusb_fill_bulk_transfer(ar->rx_ring[i], ar->dev,
+ AR9170_EP_RX, (unsigned char *)tmp->data,
+ ar->rx_max, carlusb_rx_bulk_cb, (void *)tmp, 0);
+
+ err = libusb_submit_transfer(ar->rx_ring[i]);
+ if (err != 0) {
+ err("==>failed to submit rx buld urb (%d)\n", err);
+ return EXIT_FAILURE;
+ }
+ }
+
+ dbg("rx ring is now ready to receive.\n");
+ return 0;
+}
+
+static int carlusb_load_firmware(struct carlu *ar)
+{
+ int ret = 0;
+
+ dbg("loading firmware...\n");
+
+ ar->fw = carlfw_load(CARL9170_FIRMWARE_FILE);
+ if (IS_ERR_OR_NULL(ar->fw))
+ return PTR_ERR(ar->fw);
+
+ ret = carlu_fw_check(ar);
+ if (ret)
+ return ret;
+
+ ret = carlusb_fw_check(ar);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int carlusb_upload_firmware(struct carlu *ar, bool boot)
+{
+ uint32_t addr = 0x200000;
+ size_t len;
+ void *buf;
+ int ret = 0;
+
+ dbg("initiating firmware image upload procedure.\n");
+
+ buf = carlfw_get_fw(ar->fw, &len);
+ if (IS_ERR_OR_NULL(buf))
+ return PTR_ERR(buf);
+
+ if (ar->miniboot_size) {
+ dbg("Miniboot firmware size:%d\n", ar->miniboot_size);
+ len -= ar->miniboot_size;
+ buf += ar->miniboot_size;
+ }
+
+ while (len) {
+ int blocklen = len > 4096 ? 4096 : len;
+
+ ret = libusb_control_transfer(ar->dev, 0x40, 0x30, addr >> 8, 0, buf, blocklen, 1000);
+ if (ret != blocklen && ret != LIBUSB_ERROR_TIMEOUT) {
+ err("==>firmware upload failed (%d)\n", ret);
+ return -EXIT_FAILURE;
+ }
+
+ dbg("uploaded %d bytes to start address 0x%04x.\n", blocklen, addr);
+
+ buf += blocklen;
+ addr += blocklen;
+ len -= blocklen;
+ }
+
+ if (boot) {
+ ret = libusb_control_transfer(ar->dev, 0x40, 0x31, 0, 0, NULL, 0, 5000);
+ if (ret < 0) {
+ err("unable to boot firmware (%d)\n", ret);
+ return -EXIT_FAILURE;
+ }
+
+ /* give the firmware some time to reset & reboot */
+ SDL_Delay(100);
+
+ /*
+ * since the device did a full usb reset,
+ * we have to get a new "dev".
+ */
+ libusb_release_interface(ar->dev, 0);
+ libusb_close(ar->dev);
+ ar->dev = NULL;
+ list_del(&ar->dev_list);
+
+ ret = carlusb_get_dev(ar, false);
+ }
+
+ return 0;
+}
+
+int carlusb_cmd_async(struct carlu *ar, struct carl9170_cmd *cmd,
+ const bool free_buf)
+{
+ struct libusb_transfer *urb;
+ int ret, send;
+
+ if (cmd->hdr.len > (CARL9170_MAX_CMD_LEN - 4)) {
+ err("|-> too much payload\n");
+ ret = -EINVAL;
+ goto out;
+ }
+
+ if (cmd->hdr.len % 4) {
+ err("|-> invalid command length\n");
+ ret = -EINVAL;
+ goto out;
+ }
+
+ ret = libusb_interrupt_transfer(ar->dev, AR9170_EP_CMD, (void *) cmd, cmd->hdr.len + 4, &send, 32);
+ if (ret != 0) {
+ err("OID:0x%.2x failed due to (%d) (%d).\n", cmd->hdr.cmd, ret, send);
+ print_hex_dump_bytes(ERROR, "CMD:", cmd, cmd->hdr.len);
+ }
+
+out:
+ if (free_buf)
+ free((void *)cmd);
+
+ return ret;
+}
+
+int carlusb_cmd(struct carlu *ar, uint8_t oid,
+ uint8_t *cmd, size_t clen,
+ uint8_t *rsp, size_t rlen)
+{
+ int ret, send;
+
+ if (clen > (CARL9170_MAX_CMD_LEN - 4)) {
+ err("|-> OID:0x%.2x has too much payload (%d octs)\n", oid, (int)clen);
+ return -EINVAL;
+ }
+
+ ret = SDL_mutexP(ar->resp_lock);
+ if (ret != 0) {
+ err("failed to acquire resp_lock.\n");
+ print_hex_dump_bytes(ERROR, "CMD:", ar->cmd.buf, clen);
+ return -1;
+ }
+
+ ar->cmd.cmd.hdr.len = clen;
+ ar->cmd.cmd.hdr.cmd = oid;
+ /* buf[2] & buf[3] are padding */
+ if (clen && cmd != (uint8_t *)(&ar->cmd.cmd.data))
+ memcpy(&ar->cmd.cmd.data, cmd, clen);
+
+ ar->resp_buf = (uint8_t *)rsp;
+ ar->resp_len = rlen;
+
+ ret = carlusb_cmd_async(ar, &ar->cmd.cmd, false);
+ if (ret != 0) {
+ err("OID:0x%.2x failed due to (%d) (%d).\n", oid, ret, send);
+ print_hex_dump_bytes(ERROR, "CMD:", ar->cmd.buf, clen);
+ SDL_mutexV(ar->resp_lock);
+ return ret;
+ }
+
+ ret = SDL_CondWaitTimeout(ar->resp_pend, ar->resp_lock, 100);
+ if (ret != 0) {
+ err("|-> OID:0x%.2x timed out %d.\n", oid, ret);
+ ar->resp_buf = NULL;
+ ar->resp_len = 0;
+ ret = -ETIMEDOUT;
+ }
+
+ SDL_mutexV(ar->resp_lock);
+ return ret;
+}
+
+struct carlu *carlusb_probe(void)
+{
+ struct carlu *ar;
+ int ret = -ENOMEM;
+
+ ar = carlusb_open();
+ if (IS_ERR_OR_NULL(ar)) {
+ if (IS_ERR(ar))
+ ret = PTR_ERR(ar);
+ goto err_out;
+ }
+
+ ret = carlusb_show_devinfo(ar);
+ if (ret)
+ goto err_out;
+
+ ret = carlusb_load_firmware(ar);
+ if (ret)
+ goto err_out;
+
+ ret = pipe(ar->event_pipe);
+ if (ret)
+ goto err_out;
+
+ ar->stop_event_polling = false;
+ ar->event_thread = SDL_CreateThread(carlusb_event_thread, ar);
+
+ ret = carlusb_upload_firmware(ar, true);
+ if (ret)
+ goto err_kill;
+
+ ret = carlusb_initialize_rxirq(ar);
+ if (ret)
+ goto err_kill;
+
+ ret = carlusb_initialize_rxrings(ar);
+ if (ret)
+ goto err_kill;
+
+ ret = carlu_cmd_echo(ar, 0x44110dee);
+ if (ret) {
+ err("echo test failed...\n");
+ goto err_kill;
+ }
+
+ info("firmware is active and running.\n");
+
+ carlu_fw_info(ar);
+
+ return ar;
+
+err_kill:
+ carlusb_destroy(ar);
+
+err_out:
+ carlusb_free_driver(ar);
+ err("usb device rendezvous failed (%d).\n", ret);
+ return ERR_PTR(ret);
+}
+
+void carlusb_close(struct carlu *ar)
+{
+ carlu_cmd_reboot(ar);
+
+ carlusb_destroy(ar);
+ carlusb_free_driver(ar);
+}
+
+int carlusb_print_known_devices(void)
+{
+ unsigned int i;
+
+ debug_level = INFO;
+
+ info("==> dumping known device list <==\n");
+ for (i = 0; i < ARRAY_SIZE(dev_list); i++) {
+ info("Vendor:\"%-9s\" Product:\"%-26s\" => USBID:[0x%04x:0x%04x]\n",
+ dev_list[i].vendor_name, dev_list[i].product_name,
+ dev_list[i].idVendor, dev_list[i].idProduct);
+ }
+ info("==> end of device list <==\n");
+
+ return EXIT_SUCCESS;
+}
+
+int usb_init(void)
+{
+ int ret;
+
+ ret = libusb_init(&usb_ctx);
+ if (ret != 0) {
+ err("failed to initialize usb subsystem (%d)\n", ret);
+ return ret;
+ }
+
+ /* like a silent chatterbox! */
+ libusb_set_debug(usb_ctx, 2);
+
+ return 0;
+}
+
+void usb_exit(void)
+{
+ libusb_exit(usb_ctx);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-23 08:45:56 +0000